Disappointed and furious.

I took a contract with Vodacom in 2023, then later in the year realised the billing has increased, I had a call with vodacom who advised that the increased billing is by rewardsco, which I had calls with in Dec and they promised that they would take my contract billing to the original amount or R350. In January they deducted an amount of +R500, when I was explicit about goingnback to my original plan. Inspoke to two agents, I think in Nov and December. February statement came, and I am still billed for +R500, How is this still happening when I have not agreed to this new plan. Last week an agent from Vodacom tried calling rewardsco two times and there was no pick up, they called again on Friday, no answer, they gave me a number to call customer care, I called and still no joy, I called in the morning at 8:30 and I got through their receiver that I am calling outside working hours, how when they say their office opens at 8, and their calls are never answered during the day? I sent an email today, and I received an automated response saying an agemt will call, still no call. How are we supposed to pay an extra R200 every month when we had not agreed to that. I assume you have recordings to all the calls log, so you can go to your call logs and listen.